diff --git a/src/basic/log.c b/src/basic/log.c
index d0caeb5ca3..421ae52dc5 100644
--- a/src/basic/log.c
+++ b/src/basic/log.c
@@ -804,6 +804,7 @@ noreturn void log_assert_failed_realm(
                 const char *file,
                 int line,
                 const char *func) {
+        log_open();
         log_assert(LOG_REALM_PLUS_LEVEL(realm, LOG_CRIT), text, file, line, func,
                    "Assertion '%s' failed at %s:%u, function %s(). Aborting.");
         abort();
@@ -815,6 +816,7 @@ noreturn void log_assert_failed_unreachable_realm(
                 const char *file,
                 int line,
                 const char *func) {
+        log_open();
         log_assert(LOG_REALM_PLUS_LEVEL(realm, LOG_CRIT), text, file, line, func,
                    "Code should not be reached '%s' at %s:%u, function %s(). Aborting.");
         abort();